...
Currently, all the migration scripts for all the services/repos (sunbird-lms-service, group-service, sunbird-notification-service, and sunbird-course-service) are packaged with the cassandra-migration module jar. And all the migration information is stored in the cassandra_migration_version and cassandra_migration_version_counts tables in the sunbird keyspace (used for sunbird-lms-service).
...
If any adopter wanted to build and deploy any one of the services, then the adopter needed to create all the cassandra Cassandra keyspaces by executing the existing cassandra-migration module, even though the adopter was only adopting a specific service. There is no way for an adopter to only create/migrate specific keyspaces.
...